Device for use on a core barrel



Aug. 2s, 1934.

DEVICE FOR USEv 0N A CORE BARREL Fi1ed.Apri1 3 19:53 f2' sheets-sheet 1 l G Y f C f FL l J. c. WRIGHT I l,97-l,4 37

Aug. 28, 1934. J, C, WRlGH-r DEVICE FOR USE 0N A CORE BARREL FiledAApril l3, B33 2 Sheets-Sheet 2 n r fw w m. A MCM f.

, Patented Aug. 28, 1934V "a DEVICE FOR USE N A `CORE BARREL Jesse CWi-ight, Los Angeles, Calif., assigner to Globe Oil Tools Company, Los Nietos, Calif., a corporation of 'California Application April 3, 1933, Serial No. 664,107

e 16 Claims.

6 drilling bit. t is a general object of the present..

invention to provide a simple, practical and effective device for facilitating the discharge or removal of cores from single barreled core drills and core receiving well drilling bits. In the single barrel type of-core drill and core receiving well drilling bits, the core passes up- Vwardly into the barrel which conducts the circulation Huid downwardly to the bit head. The circulation iiuid in continuously flowing downwardly around the core keeps the core loose and free in the barrel. After the drill has been withdrawn from the well it is laid in a substantially horizontalposition and thebit head and the part or parts carrying the core catcher are 'disconnected from the lower end of the barrel. To remove the core, the lower end of the barrel is permitted to rest on the iloor of the walk or derrick and the barrel is raised from its upper end until it assumes a suiiciently inclined position to cause the core to slide downfin the barrel and spill or discharge from its lower end. In practice it has been found that the barrel must be tilted or inclined at a substantial angle from the horizontal before the core will slide and that when thebarrel is in such a position and has its lower end resting on the `derrick iloor'only a very short section or portion of the core can protrude from its lower end. With only a Very short portion of the core projecting from the lower end of the barrel it is an extremely difficult and tedious task to remove the core from the barrel.

It` is an object of this invention to provide a device to be removably attached to the lower end of a core barrel that allows a substantial portion of the core to spill or discharge from the lower end of the barrel when it is inclined, thus facilitating the easy removal of the core.

Another object of the invention is to provide a device of the character mentioned that forms an open 'sided and open ended extension on the lowerv (Cl. Z55-1) easily and quickly attached to and removed from the core barrel and that protects the threads of the sub on the lower end ofthe barrel.

Another object of the invention is4 to provide a device for facilitating the discharge or removal of the core from a core barrel that may be readily attached to the lower end of the barrel without being rotated.

Another object of the invention is to provide a device of the character mentioned including a 66" novel and improved means for releasably connecting with the lower end of a core barrel.

A further object of the invention is to provide a device of the character mentioned that is convenient to handle and use and that is simple and 'N I inexpensive of manufacture.

Further objects and features of the invention will be best and fully understood from the fol- .lowing detailed description of typical forms and applications ofthe invention, throughout which 7l description reference is had to the accompanying drawings, in which:

Fig. 1 is a more orv less diagrammatic View illustrating one embodiment ofthe invention attached to and supporting the lower-end of a tiltedor inclined core barrel discharging its core. Fig. 2 is an enlarged vertical detailed sectional view of the form of the invention illustrated in Fig. l. Fig. 3 is an end view of the device illustrated in Fig. e 2. Fig. 4'is a longitudinal or vertical detailed sec- 85 tional view of another embodiment of the invention, Fig. 5 is a fragmentary transverse detailed sectional view taken as indicated by line 5-5 on Fig. 4. Fig. 6 is a longitudinal detailed sectional Y view of still another embodiment of the invention. Fig. 7 is a top or plan view of the device illustrated in Fig. 6, and Fig. 8 is a longitudinal detailed sectional view of the lower end portion of a typical core drill of the type on which the invention may be employed. e l

The form of the invention illustrated in Figs. 1, 2 and 3 of the drawings, includes generally, a body l0 adapted to be attached to or mounted on the lower end of the core barrel B, and a projecting member or extension 11 on the body 10 for receiving the core as it spills or discharges from the barrel.

The body 10 is adapted to be detachably connected tov the connecting member or sub 12 on the lower end of the barrel B.A It is the common practice to provide a sub 12 or similar part on the lower end of the-barrel proper to facilitate the connection of the barrel with the core catcher and bit head H. The particular sub 12 illustrated in the drawings is a tubular member having a longitudinal body part 13 and a tapered threaded pin 14 on its outer or lower end. The body part 13 of the sub is screw threaded on the lower end of the barrel B. The body 10 is a comparatively short tubular member adapted to be arranged on the pin 14 of the sub 12. vThe opening 15 of the body 10 is longitudinallytapered and is screw threaded to receive the threaded pin 14. When the body 10 is threaded on the pin 14 as i1- lustrated in Fig. 2 of the drawings, its inner end may engage or abut against the shoulder 16 at the base of the pin.

The projecting member or extension 11 is in the l nature of a carrier for the body 10 and is adapted to receive the core C as it spills from the lower end of the barrel B. In the particular embodiment of the invention being described, the member 11 is formed of a length of I beam disposed so that its side or end flanges 17 are substantially Vertical and its central flange or web 18 is substantially horizontal when the device is in the inoperative position as illustrated in Figs. 2 and 3 of the drawings. The member 11 -is preferably comparatively long so that a portion of the core C of substantial length may slide or pass downwardly over it when the core is spilled or discharged. The body 10 is mounted on one end portion of the member 11 so that its opening 15 is disposed longitudinally of the member and so that its periphery is seated on the web 18. The member 11 may be connected or attached to the body 10 in any suitable or practical manner. In the particular caseillustrated in the drawings, the end flanges 17 of the member 11 are Welded to the periphery of the body 10 as at 20.

The invention includes means on the outer end portion of the member 11 for engaging the Hoor F of the derrick to facilitate the free operation or movement of the device over the floor when it is carrying the lower end portion of the barrel. In the embodiment of the invention illustrated in Figs. l, 2 and 3 of the drawings, wheels or rollers 21 support the outer end part of the member 11. The rollers 2l are disposed at the outer sides of the flanges 1'7 and are carried by an axle 22 passing through aligned transverse openings in theA flanges.

After the drill has been withdrawn from the well bore it is laid in a substantially horizontal position and the bit head H and the part A carrying the core catching means D are disconnected from the lower end of the barrel B. In the more or less typical drill illustrated in Fig. 8 of the drawings, the sub 12 is threaded on the lower end of the barrel B and carries the part A which in turn carries the bit head H. After the part A has been disconnected from the sub 12, the body 10 of the device provided by the invention is screw-threaded on the pin 14 of the sub. The barrel B may then be raised from its upper end by means of the hoist mechanism in the derrick, which includes a hook G carrying an elevator E for suspending the barrel B. The body 10 may be attached to the sub 12 when the barrel B is in a substantially horizontal position on the oor of the derrick or walk and when the barrel B is raised or tilted, the rollers 21 engage and operate on the floor F in the manner illustrated in Fig.` 1. When the barrel B is tilted to a sufficiently inclined position, the core C slides downwardly through it so that it discharges or spills from its lower end on to the member 11. The member 11 is comparatively long so that it is adapted to receive or carry a substantial portion of core. The

flanges 17 projecting from the opposite edges of the web 18 guide the core downwardly on the member 11. The lower end of the member 11 is open so that the core may freely spill on to the derrick floor. 'I'he member l1 is without sides or a top so that the core spilling from the lower end of the barrel B is entirely accessible. device may be easily and quickly attached to and removed from the barrel B and greatly facilitates the removal or discharge of the core C from the barrel.

The form of the invention disclosed in Figs. 4 and 5 of the drawings includes, generally, a body 30 adapted to be removably attached to the lower end of the barrel B and an extension or carrier member 3l on the body.

The body 30 is a comparatively short tubular member proportioned to freely surround or t around the cylindrical portion 13 of the sub 12. The opening 32 ofthe body 30 is suiciently large to readily receive the sub 12 in the manner illustrated in Fig. 4. The extension or projecting member 31 may be similar to the member 11 described above, that is, it may consist of a length of I beam arranged so that its end flanges 33 are substantially vertical and so that its central flange or web 34 carries the body. 30. The body 30 is preferably disposed adjacent one end of the member 31 and is arranged so that its opening 32 is longitudinal of the member 31. 'Ihe flanges 33 of the member 31 are attached to the body 30 by welding or other suitable means. Rollers 35 are provided on the outer end part of the member 31 to carry the device for free movement or operation on the derrick floor F.

The form of the invention illustrated in Figs. 4 and 5 of the drawings includes a novel and simplified means for removably connecting with the lower end of the barrel B. A block 36 is mounted on the member 31 at the outer end of the body 30. The block 36 projects upwardly beyond the walls of the body opening 32 and is provided on its upper side with a concaved seat 37. When the body 30 is slid or arranged over the sub l2, the shoulder 16 at the base of the threaded pin 14 abuts against the block 36. The web 34 terminates at the inner end of the body 30 while the flanges 33 project beyond the inner end of the body. A separable or removable block 38 is adapted to be arranged between the flanges 33 on the inner end of the body 30. The upper side of the blocl: 38 is provided with a concaved seat 40 adapted .to receive or accommodate the barrel B. The block 38 projects upwardly beyond the walls of the body opening 32 and is adapted to cooperate with the inner or upper end 39 of the sub 12. A removable rod or pin 41 extends through openings in the block 38 and the projecting portions of the flanges 33 to attach the block to the flanges. Keys 42 may be provided to removably retain the pin 41 in position.

TheV

In employing the form of the invention illustrated in Figs. 4 and 5 of the drawings, the drill is laid in a substantially horizontal position after being withdrawn from the well and the bit head H and the core catching part A are removed from the barrel B. The body 30 may then be passed over the cylindrical portion 13 of the sub 12 so that the outer end of the sub seats against the block 36. The block 38 is then positioned between projecting portions of the flanges 33 and secured in place by the removable pin 41. The barrel containing the core C is then tilted or inclined by raising it from its upper end so that the core may slide or discharge from its lower end. During the raising or tilting of the barrel B the pull or upwardforces member 31.

are transmitted from the sub 12 to the member 31 through the block 38 and pin 41. The Vrollers 35 carry the devicet for free movement or operation over the floor vFduring tilting of the barrel. As

.the core discharges or slides from the lower end of the barrel B it is received by the `web34 of the The member 31 in being open-topped and open-ended, allows the core to freely spill on to the derrick floor. Further, the member 31 is of considerable length so that a substantial portion of the core C may be supported on the web 34 as it protrudes from the'lower end of the barrel. 'I'he device may be easily and quickly detached from the barrel B by removing the pin 41 and block 38 and sliding the body from the sub 12.

.The embodiment of the invention illustrated in Figs. 6 and '1 of the drawings includes a tubular body 50 adapted to be arranged on the sub 12 on the lower end of the barrel B, andan extension or projecting portion 51 on the body 50 to receive the core C as it spills from the barrel'.`

'I'he body 50 is a tubular member proportioned to freely'surround or receive the body or cylindrioalv part 13 of the sub 12. An inwardly facing in Figs. 6 and 7, it is in engagement with the inner end' 39 of the su'b 12. The two parts or sections ofthe ring 54 are adapted to be assembled around the barrel B and slid into position in the end of the opening 53 to abut against the shoulder 39. A latch 55 is pivoted on each section of the ring 54 as Y at 56. The latches 55 are provided with T shaped heads 57 adapted to cooperate with spaced pins 58 projecting from the body 50. Y It will be apparent how the latchesl 55 in cooperating with the lugs or pins 58 releasably lock the sectional ring 54 in positionagainst the inner end 39 of the sub 12. When the body 50 is in the operative position the shoulder 16 at the base of the pin 14 abuts against the' shoulder 52 while thesectional ring 54engages the end 39 of the sub. In this manner `the body 50 is effectively retained on or attached to the barrel B.

VThe extension lor projecting portion 51 on the body 50 is provided to allow the core to freely spill from the lower end of the inclined barrel B.- The portion 51 may be integral with the body 50 and project from the outer end oi the body. In the preferred construction, the portion 51 is of considerable length lso as to receive or carry asubstantial part of the core. The top or upper part of the portion 51 isvcut away as at 60 and the bottom or lowervpart of the portion 51 is open. In the particular construction illustrated,l the portion 51 is of less external .diameter than the body .50. Means is provided on the extensiomo'r projecting portion 51 topermit the device to be freely operated over the derrick floor F when carrying the lower end of the barrel B. `In the case illustrated in Figs. 6 and '7 of the drawings, spaced slides or skids 6l are provided on the lower side of the portion 51 adjacent its outer end. It will be apparent that vrollers similar to the rollers 21 described above may be provided on the portion 51 l -B may then be lifted from its upper end with trated in Figs. 6 and 7 of the drawings, the drill is laid in a substantially horizontal position after being withdrawn from the well andthe bit head H and the part A are disconnected from the lower end of the barrel B. The body 50 is then positioned on the sub 12 and the sections of-'the ring 54 may be assembled on the barrel 50 and slid into position in the inner end of the opening 53 where they engage the innerl end 39 of the sub. The latches 55 are then pivoted into engagement with the spaced lugs 58. The ring 54 is thus releasably latched to the body 50 to retain the body in a position on the sub 12 where its shoulder 52 is in cooperation with the shoulder 16. 'I'he barrel the skids 61 engaging the derrick floor F. When the barrel B assumes a sulciently inclined position, the core C will slide downwardly through it so as to discharge or spill from its lower end and through the-open-topped and open-ended portion 51. The core on the portion 51 may drop on to the iioor F of the derrick or may be removed. Thedevice illustrated in Figs. 6 and 7 may be easily and quickly disconnected lfrom the barrel B by releasing the latches 55 from` the pins 38 and sliding the ring 54 upwardly on the barrel B whereupon the body 50 may be removed from the sub 12.

The present invention provides a simple, practical and inexpensive device which greatly facilitates the removal of the core from the core barrel of a single barrel type core drill or well drilling bit. The forms of device described above ma be easily and quickly applied to and detached from the barrel B and protect the threads on the sub pin 14. The open-topped or open ended projec- 'tion4 orl projecting portion on the device render for facilitating the removal of a core from the core barrel including, a bodyadapted to be atl tached to.an end of the barrel and having an open projecting portion for bearing on a support to provide clearance between said end of the barrel and the support.

2. In combination, a core barrel, and a device for facilitating the removal of a core from the core barrel including. a body adapted to be attached to an end of the barreland having an open-sided projecting portion, and means on the said portion for engaging a support.

3. In combination, a core barrel, and a device for facilitating the removal of a core from the core barrel including, a body, means for removably attaching the body to an en'd of the barrel, and a projecting member on the. body rendering v the core accessible as it4 discharges frompthe barrel.l

4. In combination, a core barrel, anda device for facilitating the removal of a corejfrom the core barrel including. a body adapted to be attached to and end of the barrel and having a projecting portion for bearing 'on a support to provideclearance between said end of the barrel and support allowing free discharge of the core fromthebarreL and means on the said portion 150 for operation on the support to carry the body and end portion of the barrel connected therewith.

5. In combination, a core barrel, and a device for facilitating the removal of a core from the core barrel including, a body, means for de tachably connecting the body to an end of the barrel, a member on the body for bearing on a support to provide clearance between said end of the barrel 'and support allowing free discharge of the core from the barrel when the barrel is inclined, and means on the body for operation on the support. d

6. In combination, a core barrel, and a device for facilitating the removal of a core from the corel ing the core when the barrel is inclined.

8. In combination, a core barrel, and a device for facilitating the removal of a core from the core barrel including, a body adapted to be threadedly connected to an end of the barrel, and a part projecting from the body and adapted to slidably receive the core when the barrel is inclined.

9. In combination, a core barrel, and a device for facilitating the removal of a core from the core barrel including, a body adapted to be screwth'readed onto the lower end of the barrel, an open sided extension on the body adapted to receive the core when the barrel is inclined, and rollers on the extension.

10. In combination, a core barrel having an external shoulder adjacent one end, and a device for facilitating the removal of a core from the barrel including, a body adapted to surround the portion of the barrel adjacent said end, a part vconnectedto the body for engaging said end of the barrel, a. lock part detachably connected to the body and adapted to cooperate with said shoulder, andan extension on the body adapted to receive the core as it spills from the barrel.

11. A device for facilitating the removal of a core from a barrel having an external shoulder adjacent one end, said device including, a tubular body adapted to surround the portion of the barrel adjacent said end, a shoulder on the body for engaging said end, a lock block for cooperating with the shoulder on the barrel, means for detachably connecting the lock block to the body, and an open-sided extension on the body for receiving the core when the barrel is inclined.

12. A device for facilitating the removal of a core from a barrel havingA an external shoulder adjacent one end, said device including, a tubular 'body adapted to surround the portion of the barrel adjacent said end, a shoulder on the body for engaging said end, a lock block for-cooperating with the Ashoulder on the barrel, means for detachably connecting the lock block to the body, the body having a projecting portion for receiving the core when the barrel is inclined, and rollers on the said projecting portion.

13. A device for facilitating the removal of a core from a barrel having an external shoulder adjacent one end, said device including, a tubular body adapted to' be positioned on the barrel adjacent said end, the body having an internal shoulder adapted to cooperate with said end of the barrel, and a removable part in the inner end portion of the body for engaging the shoulder on the barrel to attach the body to the barrel, the outer end portion of the body being cut away so that the core received by it is free and accessible.

14. A device for facilitating the removal of a core from a barrel having an external shoulder adjacent one end, said device including, a tubular body adapted to be positioned on the barrel adjacent said end, the body having an internal shoulder adapted to cooperate with said end of the barrel, a removable split ring in the body engaging the shoulder on the barrel to retain the body on the barrel, the outer end portion of the body having its upper wall cut away so that the core received by it is free and accessible, and means on said portion of the body whereby the body may be readily operated over a support.

15. A device for facilitating the removal of a core from a barrel having an external shoulder adjacent one end, said device including, a tubular body adapted to be positioned on the barrel adjacent said end, the body having an internal shoulder adapted to cooperate with said end of the barrel, a removable split ring in the body engaging the shoulder on the barrel to retain the body on the barrel, releasable latch means for connecting the split ring to the body, the outer end portion of the body having its upper wall cut away so that the core received by it is free and accessible, and means on said portion of the body whereby tlie body may be readily operated over a support.

16. A device for facilitating the removal of a core from a barrel having an external shoulder adjacent one end, said device including, a tubular body adapted to be positioned on the barrel adja' cent said end, the body having an internal shoulder adapted to cooperate with said end of the barrel, a removable split ring in the body engaging the shoulder on the barrel to retain the body on the barrel, releasable latch means for connecting the split ring to the body, the outer end portion of the body having its upper wall cut away so that the core received by it is free and `accessible, and skids on said portion of the bodyv 

